Well pump



J', PENROD AND R. D. THGMPSON.

WELL PUMP.

APPLICATION man AUG 24,1921.

Paened Aug. 8, 1922.

2 5 HEETSUSHEET l.

d m w D n m J Bwbexr: D., Thcmm J. PENROD AND R. D. THOMPSON.

WELL PUMP.

APPLICATION FHED AUG 24.192?.

fi @maar n n te es o rre ce @iria il sa if. il. ser

'WELL PUMP.

mesmo.

Specification of Letters Patent.

Patented Aug. 8, E922.

Application filed August 24, 1921. Serial No. 494,346.

To all w/mm. t may concern.:

Be it known that we. Joris' llnxiion and ltonnirr l). 'l`1io.\irso.\' citizens oi' the l'nited iitates` and residents of (lkmulgee, in the county oi Okinulgee and State ot' (Yklahoina, have invented certain new and uset'ul lmprovenients in Well lunips, ot' which the following is a specification.

(.)ur present invention relates usually to pumps for ilse in driven wells and is more particularly designed for use in connection with oil wells where the presence ot sand with the oil usually renders it necessary to frequently replace valve seats and pump leathers and the like.

Uur primary object isv the provision of a pump which may he placed within the casing ot' a well without the necessity of' a pump tube and which may be adapted in place at any desired point within the well Casing and clutched attliat point until its removal for one reason or another becomes essential. A further object is the provision of a pump ot' this type which may be just as readily and easily removed, which is ca# pable of ready repair when once removed and which t'or these purposes and reasons is particularly desirable and applicable for use in wells that have large volumes of oil and have ceased flowing due to insutlicient natural gas pressure.

ln the accompanying drawings which illustrate our present invention and form a part of this specification,

Figure 1 is a sectional view through a well casing and through the upper portion of our improved pump loosely therein prior to anchoring.

Figure Q is a similar view through another portion oi'A the well casing showing the lower portion ot our improvedpump in place.

Figure 3 is a view similar to Figure 1 showing the anchor means in ett'ective position.

Figure l is an enlarged n, detail section through the cable coupling member.

Figure 5 is an enlarged cross section taken on line of Figure 3. and

Figure 6 is a detail perspective view taken on an enlarged scale of the clutch ring and one of the clutching anchors.

Referring now to these figures, we have shown in Figures 1. Q and 3 the cylindrical easing A of a driven well. as for instance. an Oil well, within which our improvements are designed to operate without the use of a pump tube ordinarily employed within the casing and which as well known requires step b y step jointing and unjointing in its insertion and removal so that these operations are both lengthy and tedious and become decidedly disadvantageous especially in those oil wells where sand abounds in great quantities in the oil, requiring the removal of cup leathers and frequently of the valves and other sections at comparatively short intervals.

In our improved arrangement a pump barrel is utilized within the lower enlarged portion 10 of which the piston 11 operates above the lower intake or standing valve 1Q, the latter secured in connection with a shoe 13 at the lower end ot' the barrel above the perforated intake member ist. lt is to be understood that so `far as our invention is concerned the pumping meni.ber,for instance, piston 11 may be of any suitable type, various types now in use being adaptable-with' almostequal facility, and itis to be further understood that. the type ot' piston we have shown is for illustration only, its upper valve 15 permitting upfiow of iiuid through the pump upon each downward stroke ot the latter so as to lift, (hiring each downward stroke,`that fluid sucked up through the standing valve 12 upon the previous upwai'd stroke ot' the piston.

To the piston 11 is connected the lower en d ot' a pump rod 16 passing upwardly' through the upper reduced portion,17 ofthe pump barrel. the latter of which is connected at its lower end with the lower enlarged portion 10 ofthe barrel by ai reducer 1h' and a cylindrical relietl valve housing 19 having a tapering end surface 2l) adjacent to its lower end provided with radial openings 21 through its wall. .i conical reliei valve 22 is lengthwise slidable within the housing 19 above the upper end ot the lower enlarged portion 1() ofthe pump barrel and normally seats against the tapering inner surface Q0 under tension ot' a spring :23 compressed within the housing 1%) between the relief valve 22 and the reducer 18.

rllhe reducer '18 is connected to the lower vend ot the upper portion 17 ot the pump rel 17, below the clutch supporting ring QT, the latter of which lis also slidable upon the pump barrel.

The ring 2T is provided with ,upstanding .bearing members :2S at spaced points therearound. as is best seen in Figure 6. upon which bearing members are pivotallv connected the lower ends of links 2S) whose upper ends are in turn pivotallv connected to the lower ends of the clutching or anchor members 3() having outer inclined and toothed surfaces 31. and having inner dove tailed grooves 32. n

rI`he several clutch or anchor membersl are movable into and out of the .effective position upon the external surfaceof a slide 33 movable on the upper portion of the barrel 1T between stationary collars 34 and 35. This slide 33 has an outer tapering surface. provided with outstanding dove tailed ribs 36. which the dove tailed grooves 3Q of the clutch or anchor membersBO receive. so that in their movement with respect to the slide. these clutching members or anchors 30 will be guided by the ribs and as the clutch members move upwardly along the surface of the slide they will be shiftedl outwardly by virtue of the tapering outer surface of the slide.'

At its upper end the'slide 83 engages a through the relief valve 2Q and through the lupper reduced portion 1T ofthe barrel in spaced relation to Aboth of these par-ts so that :there is left a free passage for the upward 'movementbf the fluid around the pump rod intothe well casing above the pump barrel.

The clutch actuating ring 26 is a member of considerable weight whereby when. during the l 'wering movement ofthe pump barrel into the well casing this movement is snddenlychecked. the clutch actuating rilw 26 will move downwardl)r on the barrel 14 against the Vtension of spring and will compress this spring to such an extent that the rebound of the spring will shift the vring 26 upward-liv into forceful engagement with a clutch supporting ring Q7. throwing the latter upwardly with.l its clutch or anchor members 30 whereby the latter will slide upwardly and outwardlwv on the slide member 30 into engagement with the inner surface of the well casing A.

For the abovey purpose it will be understood that in lowering the pump into the well casing in the rst instance the partswill be in the position shown in Figure 1 with theslide 33-in lowermost position against the lower stop collar 34. andy means employed 16A las an annular rib -19 as being the same means subsequently Iutilized to impart reciprocating`movements of the pump rod and its piston.

Thus a cable 39 may be utilized. its lower cud passing through lthe upper axial opening l() of a cable connecting member 41. and the lower cud ofthe cable being permanentl v secured withiua rectangular block 4Q .shiftablc into and out of a rectangular socket ofthe member 41 through its side opening 421 and norniall \v held -in p lace within said socket b v a set screw 41. Thus turning movement of the cable 39 will be colmnunicated to .the cable connecting member 41. thc latter of which has a depending internulliv thrcadetl portion 4.3. (')n the upper shouldered endl of the pump rod 16 is a flanged rotating sleeve -16 threaded into the depending portion of the cable connecting member 11 with its upper surface opposing the lower surface of a head 1T rigidly secured upon the upper end of the pump rod. AMiti-friction balls -18 provide for free rotation ofA the cable connecting member with respect to the upper end of the pump rod. such balls being disposed as shown in Figures 1 and l between the collar 46 and the head 1T of the pump rod. so that all twisting and turning n'iovement of the cable 39 will thus` be taken up with minimum wear of the parts and without'turning movement'of the piston 11 which would have the effect of causing too great wear of the latter.

Adjacent to its lower end the pump rod plainly seen in Figure 9 which is movable upwardly through the lower end of the relief valve housing 19 and into engagement with the lower cud of the relief valve QQ as shown in dottcd lines in Figures 3 and 6. rib 49 being spaced above a lower and somewhat larger rib 5() of the pump rod provided with notches 51 to admit of free passage of fluid thereb)v and adapted upon engagement. during upward movement of the pump rod. with the-lower end of the relief valve housing 19' which forms an annular shoulder within the upper end of the lowei" enlarged portion '10 of thc pump barrel.

Thus in lowering the pump within the wellicasing A b v means of the cable 3S) and with the parts in the position shown in Figure 1. the compressible sleeve 3T being in the normal extended position. the weight ot' the pump barrel and its parts is sustained through the pump rod 16 and its lowermost collar 50 in engagement with the lower shouldered end of the relief valve housing 19. When the pump has reached to the point where it is desired to be anchored foroperation. the cable 39 is abruptlv snubbed and in the arrested movement of the p ump barrel and its partsdue to this sudden snubbing of the cable, the clutch' aaeaave actuating ring 2G moving downwardly of its own inertia against the tension ot' the spring 25 as above described with a result that this spring 'is compressed and then rebounds, moving the clutch actuating ring 2G upwardly into engagement with the clutch supporting ring 2T so as to torce the latter with its several clutches or anchor members 3l) upwardly and outwardly along the slide. 33 and into engagement with the inner surface of the well casing A so that 'these clutches or anchor members 3() will thereafter sustain the weight of the pump rod and its parts vby virtue of their downwardly inclined teeth 31 in contact with the well casing. Thus when the pump rod is again slightly lowered, the barrel and its parts supported now by the clutch members 30 will move downwardly through the slide compressing the sleeve 37 between the slide and the barrel head 38 untilthis sleeve is extended laterally by such compressioninto firm, even and uniform contact with the inner surface of the well casing A so as to prevent downward passage of fluid past this sleeve.

Thus the. parts will in active position assume the position shown in Figure 3 and it is simply necessary to continue lowering movement ot the pump rod 16 to such a point that its plunger will move upwardly and downwardly in operation between the lower standing valve 12 and the relief valve housingr 19 without engaging either ot these parts. Thus as the piston 11 moves upwardly fluid will be sucked upwardly through the perforated intake member 1-l and upwardly through the standing valve 12 within the lower portion 10 of the barrel 12 below the pump and upon each downward movement of the piston this tiuid will be forced upwardly through the piston and through its valve 15 and from thence upwardly around the piston in and through the reduced portion 12 of' the barrel into the well casing A above the pump.

- lt is obvious that the clutch or anchor members 30 support the pump'barrel in the active position against downward movement and do notI prevent the barrel from upward movement` which frictional engagement of the compressed sleeve 2T with the well casing and the weight above the pump alone prevents, and it thus becomes obvious that when the pump is to be pulled upwardly out of the Well,- elimination of excessive strairrupon the cable 39 depends upon relief of the Weight of the fluid upon the pump. lt is for this purpose that the pump rod 1 6 has a collar 49 engageable with the lower end ot the relief valve 22 as the pump rod is drawn upwardly beyond the limit o'tl its vnormal up stroke in drawing the pump from the Well. Upon such engagement of the rib or collar l19 of downwardly through the upper portion of f the barrel and then outwardly through the openings 2l into the well casing A around the. lower end portion 1() ofthe pump vbarrel. Then t'urther upward movement of the pump rod 1G after the weight of fluid about the pump is relieved, causes engagement between the lowermost collar 50ct the pump rod and the lower shouldered end of the relief valve housing so that the pump barrel will be lifted and as the clutch or anchor members 30 shift downwardly the slide 33 will alsovbe free so that it may shiftdownwardly and relieve distending pressure against the flexible sleeve 3T.

lt is thus obvious'that our invention is particularly advantageous in connection with those wells requiring the frequent removal of the pump for cleaning and repairing as well as those wells requiring frequent swabbilig, on account ot its adaptability to extremely easy and quick installation and removal, and that while as shown the pump is limitedto use in more or less shallow wells where the weight vof iuid above the pump barrel can be lifted by means of a cable such as the cable 39, it is to be observed that the cable connecting member 41 has an upper reduced and externally threaded portion 52 which may be utilized to connect the lower end of a plunger actuating rod or tube in place of the cable.

ille claim:

1. In a pump for well casings,abarrel, a pump rod extending through the barrel and leaving a fluid outlet spacelietween the salne and the barrel, a standing valve at the lower end of the barrel, a valvedplunger within the lower portion of the barrel connected to said rod, said barrel including a portion engageable by the pump rod upon upward movement of the latter beyond the normal upward limit of its stroke, provided with an internal tapering portion forming a valve seat and having apertures therethrough, a ring shaped tapering 'valve member around the rod normally seated downwardly on said seat and controlling the several apertures, and' means carried by the pump rod to unseat the said valve prior to'k engagement of the rod with the barrel for lifting the latter.

2. In a pump for well casings, a barrel having automatically active means in connection with its upper end for laterally shifting movement into Huid tight engagement with the inner surface of a well casing and having a relief valve housing adjacent to its upper end provided with a lower internal' Valve seat above the shoulder, ,aud also pr0- 10 seat to normally .pelose the inner ends of said apertures. said rod having` means to.

engage and unseat the said valvel upon upward movement of the rod beyond the no1'- inal stroke of the plunger, and means also on the rod to engage a. portion of the barrel upon upward movement of the rod subsequent to the unseating of said, valve.

JOHN PENROD. ROBERT D. THOMPSON. 

